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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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4,150 results- Aapi.locus.reportData & research
Returns cited land use, acreage, year built and legal jurisdiction for an address or jurisdiction-scoped parcel id. Returns the same records as locus_parcel_lookup. Use this when your client can only call paid x402 routes. Use locus-parcel-value instead when you need assessed value and sale fields from the resolved official parcel. Wired official parcel sources only. No owner or mailing fields.
BaseSolanaEthereum+10api.locus.reportfrom $0.0159 endpoints - SSiteCheck Health & TravelSearch & web
Live Bring a Trailer auctions (collector cars, motorcycles, parts), optionally filtered by words in the title (e.g. porsche 911) or no-reserve only: title, model year, current bid with currency, auction end time, no-reserve flag, country and listing URL, soonest-ending first, from BaT's public auctions page.
BaseSolanaEVM chain 5042+9api.healthtravel-api.workers.devfrom $0.002121 endpoints - RReadXSocial & people
Search for tweets by query (optional product filter; paginate with cursor). Example: GET /api/search/tweets?q=typescript
BaseSolanareadx.shfrom $0.0110 endpoints - UURL Fetch / Web ScrapeImages, audio & video
Fetch any URL (web scraping / URL fetch) and get the raw content: HTML/JSON/text as text, images and PDFs as base64 (for multimodal LLM input), or markdown. Final URL after redirects, status, content type, size. Fetched from Cloudflare's edge (fallback for sites that block it), up to 5 MB. Error statuses are not charged.
BasePolygonSolanaagent-data.centorprat.workers.devfrom $0.00383 endpoints - Ppolynews.newsCrypto & DeFi
Smart money analysis: YES/NO concentration, sharp holders (track record), unusual-wallet anomalies, net flow, and directional lean. Anomaly intensity is NOT a trade recommendation.
BaseSolanapolynews.newsfrom $0.0016 endpoints - AAISkills402 API: JSONL RepairImages, audio & video
JSONL Repair API: turns broken JSON Lines (NDJSON) into one valid record per line - joins, splits, unwraps, drops fences and chat text, fixes quotes, keys, commas, Python literals; numbers copied as written. $0.003 USDC per call, no account, no language model: a cut-off record, repeated key or ambiguous leading zero gets a paid CANNOT REPAIR verdict. POST JSON {input} up to 60 000 chars; free exam
Baseapi.aiskills402.comfrom $0.003172 endpoints - Xx402.forgemesh.ioOther services
A daily rotating spotlight on one paid x402 endpoint from the ForgeMesh fleet: what it does, what it costs, its input schema, a sample response, and the exact call to make. Deterministic by UTC date, so agents and humans checking on the same day see the same pick. Optional date parameter (YYYY-MM-DD) previews past or future days. One call, one new capability discovered.
Basex402.forgemesh.iofrom $0.00159 endpoints
Laso FinanceCrypto & DeFiGet a Firebase ID token for authenticating with the callable APIs
BaseSolanalaso.financefrom $0.0016 endpoints- Rrisk.yo.xyzOther services
Targeted node lookup by asset address or protocol/asset name — the sole discovery path
Baserisk.yo.xyzfrom $0.0013 endpoints
api.api-agent-ia.chAI & agentsWhat does a transaction on Base cost right now? Returns the current gas price and base fee in gwei, with the block number, cached for 5 s ($0.001 per call).
Baseapi.api-agent-ia.chfrom $0.00124 endpoints- Kkari.mayim-mayim.comOther services
Omikuji API
BasePolygonkari.mayim-mayim.comfrom $0.015 endpoints - SSiteCheck Agent Intel & DevCrypto & DeFi
Checks an x402 (HTTP 402 payment) endpoint before you pay: one unpaid GET, then the HTTP status, whether a 402 challenge with an accepts list is present, the payment networks, asset, price and pay-to address format, CORS header and response time. Does not pay, does not verify the seller's identity or reputation, and gives one sample, not uptime.
BaseSolanaEVM chain 5042+9api.fadeandco.workers.devfrom $0.002135 endpoints - HHALOWERK tempoImages, audio & video
Prüft am Objekt api-antwort den Befund Gesamtladezeit.
Basetempo.halowerk.comfrom $0.001100 endpoints - Uunderground.substratesymposium.comCrypto & DeFi
Wire-In Lookup — per-entity merchant-seat verdict. Pass ?ua=<counterparty-UA>; get ONE signed row: score (0.0-1.0 payment-reliability observed at this seat), confidence, verdict (settled | attempted_payment | probe_only | low_signal | unknown), observed counts, Ed25519 attestation. $0.01 USDC/entity on Base or Solana. Fold the score into your own counterparty model — wire it into your scoring loop
SolanaBaseunderground.substratesymposium.comfrom $0.01180 endpoints - TTenPrintCrypto & DeFi
Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.
BaseSolanaalgorandrubric-protocol.comfrom $0.00129 endpoints - SSatellite & GeoRisk x402 APIImages, audio & video
Agent-ready satellite observations for any coordinates. Returns PNG image URLs and scene metadata for true color, vegetation, water, thermal, or radar analysis.
Basesat.ipintel.aifrom $0.0024 endpoints
AgentFeedImages, audio & videoSpot price: the on-chain DEX price for SOL, BTC or ETH, the median of deep USDC pools on Solana, Ethereum and Base read from chain state, and the pools that served it. Use when you need to answer: What is the spot price, without picking a venue? Any other symbol answers 400 with the supported list and is never billed.
SolanaBasePolygon+6x402.ochinimus.appfrom $0.00198 endpoints- Aapi.x-402.onlineImages, audio & video
Answer a question about an image, or describe it, from a URL or base64. Image understanding pay-per-call, no account and no API key: send an image URL (or base64) and an optional question, receive a plain-language answer from a multimodal…
BaseSolanaapi.x-402.onlinefrom $0.00561 endpoints - Ggateway.spraay.appDeveloper tools
Send email notification for payment confirmations, alerts, receipts.
BaseSolanaRobinhood Chaingateway.spraay.appfrom $0.00128 endpoints - My usage (wallet-keyed purchaseImages, audio & video
Your own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payment IS the identity, so nobody can read another wallet's profile.
SolanaSeiAvalanche+8agent402.toolsfrom $0.001669 endpoints - SSocialFetchSocial & people
Search X posts or people by query.
Baseapi.socialfetch.devfrom $0.0137 endpoints - FLUX Image for AgentsImages, audio & video
Delx Commerce cheap image generation API for agents at $0.01 USDC. Call when you need a product visual, ad creative, thumbnail, banner, logo concept, or social graphic with no API key or monthly plan. Commercial FLUX Schnell stills via x402 on Base or Solana—public WebP URL, SHA-256 receipt, and 11 aspect ratios. No subscription.
SolanaBaseapi.delx.aifrom $0.0011,153 endpoints - HHALOWERK crawlspurSearch & web
Prüft am Objekt parameter-url den Befund Wert des X-Robots-Tags.
Basecrawlspur.halowerk.comfrom $0.001100 endpoints - LLocus x402 ServicesOther services
Locus public pay-per-use API
Basehunter.x402.paywithlocus.comfrom $0.0085 endpoints
DeFi Safety OracleSocial & peopleFocused honeypot check: a live buy-then-sell simulation against real DEX liquidity (Aerodrome, Uniswap V2/V3/V4). Tells an agent whether the token can actually be SOLD, the round-trip loss percent, and whether GoPlus or honeypot.is flag it too. Catches sell-blocking scam tokens, extreme sell taxes and no-liquidity traps before a buy is placed.
Baseoracle.cyberwarex.comfrom $0.00121 endpoints
HivemindOSImages, audio & videoSearch the news: news articles for a search, each with its headline, address, outlet, a line of text and when it was published. Use when an agent needs the latest news articles on a topic, optionally only from the past day or week. $0.01 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.
Baseapi.hivemindos.appfrom $0.0135 endpoints
Arkham x402Other servicesGet Arkham intelligence for an address. $0.20 per call.
BaseSolanaapi.arkm.comfrom $0.207 endpoints- GgeoprimitivesData & research
Give it a latitude and longitude and it answers with what the nautical chart says about the water there: the depth range of the charted depth area containing the position, the nearest charted sounding and how far away it is, and the chart's own zone of confidence for that area. Parameters go in the query string: this is a GET, there is no body. NOT FOR NAVIGATION, stated first because it is a cond
Baseapi.geoprimitives.devfrom $0.0053 endpoints - TTech DetectDeveloper tools
One HTTP request per host, matched against an in-house signature set. Every hit carries a confidence value from 0 to 100 and the evidence it rests on: response header, asset path, cookie name, meta generator, DNS or ASN record. Results are cached for 24 hours per host, so a repeat lookup of the same domain answers from cache.
Basestack.halowerk.comfrom $0.005106 endpoints - BBlockchain.info APICrypto & DeFi
Paid AI-agent access to Blockchain.com Explorer API
Baseapi.blockchain.infofrom $0.00559 endpoints
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.